Approval Details

Valid E.O.


This Executive Order approved the specified parts on on January 25, 1994.
As of Thursday, October 29th, 2020 this Executive Order has not been overturned or superceeded.

Approved Parts

1991-1994 GM trucks with a 5.0 to 7.4 liter V8 engine

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-6
  • Executive Order 231-6 / D231-6
  • ARB # D-231-6
  • Executive Order No: D-231-6
  • C.A.R.B. No. D-231-6
  • Resolution D-231-6
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-231-6 PDF

D-231-6 Document:

Current View

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